I see a lot of posts on this topic and I am still a little confused, overnight, I crossed the pond on a flight from LFPG TO KMIA.I had constant wind changes where my IAS (which was set on auto-pilot at 260) would be constantly changing from a low of 250 to over 300 which was triggering the overspeed alarm. It seemed to me it was consistently moving in the 260-270 range but I did experience frequent changes in the high low range stated above.I do have the latest vesion of FSUIPC (3.45) registered, I also have wind smoothing checked with 5kts per second checked, I also have allow gusts in upper winds checked. This evenings flight was at FL 380. Any thoughts how I can minimize this problem?

Hi,Try un-checking that allow gusts in upper winds option.Hope this helps,JimActiveSky Sales and Supporthttp://www.hifisim.com/images/as2004proudsupporter.jpg